TITLE

Volume production of Li- in a small multicusp ion source

AUTHOR(S)
Walther, S. R.; Leung, K. N.; Kunkel, W. B.
PUB. DATE
August 1987
SOURCE
Applied Physics Letters;8/24/1987, Vol. 51 Issue 8, p566
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Negative lithium ions, generated by volume processes, have been extracted from a small magnetically filtered multicusp ion source. Current densities of 1.9 mA/cm2 have been obtained with a discharge voltage of 40 V and a discharge current of 4 A.
ACCESSION #
9823995

 

Related Articles

  • A neutral lithium beam source. Zhang, XiaoDong; Wang, ZhengMin; Hu, LiQun // Review of Scientific Instruments;Apr94, Vol. 65 Issue 4, p1231 

    A low energy neutral lithium beam source with energy about 6 kev and a neutral beam equivalent current of 20 µA/cm² has been developed in ASIPP in order to measure the density gradient and the fluctuations in the edge plasma of the HT-6M tokamak. In the source, lithium ions are extracted...

  • Direct extraction of negative lithium ions from a lithium plasma. Wada, Motoi; Tsuda, Hiroshi; Sasao, Mamiko // Review of Scientific Instruments;Jan1990, Vol. 61 Issue 1, p433 

    Negative lithium ions (Li[sup -]) were directly extracted from a lithium plasma in a multilane cusp plasma container. A pair of permanent magnets mounted near the extractor electrode created the filter magnetic field that separated the extraction region plasma from the main discharge plasma. The...

  • Advances in high-harmonic fast wave physics in the National Spherical Torus Experiment. Taylor, G.; Bell, R. E.; Hosea, J. C.; LeBlanc, B. P.; Phillips, C. K.; Podesta, M.; Valeo, E. J.; Wilson, J. R.; Ahn, J-W.; Chen, G.; Green, D. L.; Jaeger, E. F.; Maingi, R.; Ryan, P. M.; Wilgen, J. B.; Heidbrink, W. W.; Liu, D.; Bonoli, P. T.; Brecht, T.; Choi, M. // Physics of Plasmas;May2010, Vol. 17 Issue 5, p056114 

    Improved core high-harmonic fast wave (HHFW) heating at longer wavelengths and during start-up and plasma current ramp-up has now been obtained by lowering the edge density with lithium wall conditioning, thereby moving the critical density for perpendicular fast-wave propagation away from the...

  • Lithium Jet Neutralizer to Improve Negative Ion Neutral Beam Performance. Grisham, L. R. // AIP Conference Proceedings;3/12/2009, Vol. 1097 Issue 1, p364 

    Fusion neutral beam systems have conventionally used gas cells of the beam isotope as neutralizers. In the design of negative ion beam systems for ITER, and likely also for future reactors, the large gas efflux arising from these cells can lead to many problems. We discuss the possibility of...

  • Development of a Li- ion source. Walther, S. R.; Morse, E. C.; Leung, K. N. // Journal of Applied Physics;10/1/1989, Vol. 66 Issue 7, p2930 

    Reports on the development of lithium[sup-] ion sources for diagnostic neutral beams for fusion research. Volume prodution of a lithium[sup-] ion beam from a plasma discharge; Ratio of atoms to molecules in the ion source; Schematic diagram of the lithium ion source.

  • Modified perveance law for neutral-beam ion sources. Uhlemann, R.; Wang, G. // Review of Scientific Instruments;Sep89, Vol. 60 Issue 9, p2879 

    The perveance law for ion sources is modified based on experimental data gained during the conditioning phase of three multiaperture ion sources for neutral-beam injection into TEXTOR. The ion sources are modified JET PINIs with a three-grid accel-decel extraction system designed for 55 kV, 88...

  • Development of an advanced ‘‘volume’’ H- source for neutral beam application. Leung, K. N.; Anderson, O. A.; Chan, C. F.; Cooper, W. S.; DeVries, G. J.; Hauck, C. A.; Kunkel, W. B.; Kwan, J. W.; Lietzke, A. F.; Purgalis, P.; Wells, R. P. // Review of Scientific Instruments;Sep90, Vol. 61 Issue 9, p2378 

    Based on recent experimental results made on the large and small multicusp volume H- sources, a new multicusp source has been designed to generate high-brightness H- or D- beams for high duty factor or dc operations. Cesium will be introduced into the source plasma to enhance the H- output...

  • Design of an ion temperature diagnostic based on neutral beam scattering. van Heesch, E. J. M.; Hirose, A.; Sarkissian, A.; Skarsgard, H. M. // Review of Scientific Instruments;Aug1986, Vol. 57 Issue 8, p1792 

    Small-angle neutral beam scattering will be used on the STOR-M tokamak to obtain space and time-resolved measurements of the ion temperature. Advantages of the technique and experimental considerations leading to the design are discussed. It is expected that a 20-30-kev helium beam of...

  • Low Z impurity ion extraction from Tokamak Fusion Test Reactor ion sources. Kamperschroer, J. H.; Grisham, L. R.; Newman, R. A.; O’Connor, T. E.; Stevenson, T. N.; von Halle, A.; Williams, M. D.; Wright, K. E. // Review of Scientific Instruments;Oct93, Vol. 64 Issue 10, p2729 

    Tokamak Fusion Test Reactor (TFTR) deuterium neutral beams have been operated unintentionally with significant quantities of extracted water ions. Water has been observed with an optical multichannel analyzer. These leaks were thermally induced with the contamination level increasing linearly...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics